VU

Simulium posticatum

Unknown

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Simulium posticatum faces significant threats from water pollution and habitat degradation affecting the clean, fast-flowing streams essential for its larval development. Agricultural runoff, urban development, and industrial discharge alter water chemistry and reduce oxygen levels in breeding habitats. Climate change poses additional risks through altered precipitation patterns and temperature increases that may push suitable habitat beyond the species' tolerance range.

Threat summary

Habitat

This black fly species inhabits clean, fast-flowing streams and rivers with rocky substrates where larvae attach to submerged surfaces. Adults are typically found in riparian vegetation near breeding sites, requiring well-oxygenated aquatic environments for successful reproduction.

Other threatened species in Simuliidae

VU

Simulium latipes

Unknown

Threatened in Denmark

VU

Lepiota echinella

Unknown
EN

Lyophyllum deliberatum

Unknown
Scarce BlackneckCR

Scarce Blackneck

Lygephila craccae

Unknown
Common Fire SalamanderVU

Common Fire Salamander

Salamandra salamandra

Declining

Frequently asked questions

Why is Simulium posticatum classified as Vulnerable?
Simulium posticatum is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. Simulium posticatum faces significant threats from water pollution and habitat degradation affecting the clean, fast-flowing streams essential for its larval development. Agricultural runoff, urban development, and industrial discharge alter water chemistry and reduce oxygen levels in breeding habitats. Climate change poses additional risks through altered precipitation patterns and temperature increases that may push suitable habitat beyond the species' tolerance range.
Where does Simulium posticatum live?
Simulium posticatum occurs in Denmark, Finland, France, Germany, Netherlands, and Norway (plus 3 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Simulium posticatum?
The main threats to Simulium posticatum are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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